活化后性能提升的时间反应,由一个 plyometric 调节活动诱导
Marcos Vinicius Casais Barreto1, Juliana Ferreira da Silva Telles2, Marcela Rodrigues de Castro1,2
1Postgraduate Program in Rehabilitation Sciences, Institute of Health Sciences, Federal University of Bahia, Salvador, BA, Brazil.
Frontiers in sports and active living
|July 13, 2023
概括
压力计调节活动 (CA) 提高了高达9分钟的性能,证明了后激活性能增强 (PAPE) 效应. 教练可以利用这一点来提高下肢力量.
科学领域:
- 运动生理学 运动生理学
- 体育科学 运动科学 运动科学
- 生物力学 生物力学
背景情况:
- 激活后性能增强 (PAPE) 描述了之前最大或近最大收缩后肌肉力量生产的暂时改善.
- 众所周知,度调节活动 (CA) 引发PAPE,但时间特征需要进一步调查.
研究的目的:
- 为了研究后激活性能增强 (PAPE) 效应的时间响应,在 plyometric 调节活动 (CA) 之后.
主要方法:
- 十四名活跃的成年人参加了一项交叉设计研究,包括三次实验室访问.
- 参与者进行了反运动跳跃 (CMJ) 测试,在1,3,6和9分钟前和之后进行了压力计CA或坐着的控制条件.
- 用重复测量双因素ANOVA与邦费罗尼调整进行统计分析.
主要成果:
- 对CMJ性能观察到显著的时间,条件和相互作用效应.
- 与活动前水平相比,Plyometric CA导致CMJ在1,3和6分钟后显著增加,与活动前水平相比 (P <0.01).
- 干预后1,3,6分钟和9分钟的CMJ表现在条件之间有显著差异 (P <0.02),对于平度条件的影响大小很小.
结论:
- 度调节活动会产生持续长达9分钟的后激活性能增强 (PAPE) 效果.
- 力量和健身专业人士可以使用多组复合计CA来实现下肢力量的立即增强.
相关概念视频
Long-term Potentiation
55.4K
Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre- and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
55.4K
Muscle Stimulation Frequency
2.3K
The contraction strength of muscles is regulated by motor neurons, which modulate the frequency of action potentials dispatched to the motor units based on the body's requirements. This process of varying the muscle stimulation frequency allows muscles to contract with a force that is precisely tailored to the needs of the moment, whether lifting a feather or a heavy box.
Wave summation
At low firing rates, motor neurons induce individual twitch contractions in muscle fibers. These twitches...
Wave summation
At low firing rates, motor neurons induce individual twitch contractions in muscle fibers. These twitches...
2.3K
Motor Unit Stimulation
1.7K
When the neuron of a motor unit fires an action potential, it triggers a series of events, leading to a twitch contraction in the muscle fibers. The process of excitation-contraction coupling is crucial in relaying the action potential to the muscle fibers.
The latent period of contraction marks the onset of excitation-contraction coupling, when the action potential propagates across the sarcolemma, preparing the muscle fibers for contraction. As the fibers enter the contraction phase, the...
The latent period of contraction marks the onset of excitation-contraction coupling, when the action potential propagates across the sarcolemma, preparing the muscle fibers for contraction. As the fibers enter the contraction phase, the...
1.7K


